I've changed in my settings to use Litres and L/100km but when I go to "Add a Fuel-up" it asks for Gallons and Price Per Gallon. How do I change that? If I put in my amount as litres it thinks it's in gallons and then just converts it to litres for the display. I could convert to gallons I suppose but that defeats the purpose of changing my settings. If I were to convert it myself, what formula would I use to get the price per gallon from my price per litre?
Welcome. You set this up when you add a vehicle. Select Bruzer, and at the top of the page you will see "Edit Vehicle". Under "Track Fuel in:" select Litres.
I track my fuel in Litres, as that is how it is sold in the UK, and Fuelly displays it in mpg(UK) for me.